Near field connection for secure tractor trailer communication, and associated systems and methods

ABSTRACT

Near field connection for secure tractor trailer communication, and associated systems and methods are disclosed herein. In one embodiment, a system for wireless communication between a tractor and a trailer includes a first transceiver (TRX) attached to the tractor, and a second TRX attached to the trailer. An engagement between the tractor and the trailer brings the first TRX within an operational distance to the second TRX.

BACKGROUND

Some commercial vehicles, such as semi-trailer trucks, include acombination of a tractor and a semi-trailer. An example of suchsemi-trailer truck combination is a Gross Vehicle Weight Rated (GVWR)Class 8 tractor that pulls a trailer.

FIG. 1 is a side plan view of a tractor and a trailer in accordance witha conventional technology. A tractor 12 and a trailer 11 form thesemi-trailer truck combination. After the combination is formed, anoperator plugs electrical cables 13 from the tractor 12 into a plug onthe trailer 11, thus enabling electrical communication between thetractor 12 and the trailer 11.

In operation, the tractor 12 brings the trailer 11 to a destination, forexample, to a loading depot. The tractor 12 may disengage from thetrailer 11, engage with another trailer, and pull that trailer toanother destination, while the original trailer remains at the loadingdepot. Such interchangeability of trailers improves utilization of thetractor 12, because idle usage is reduced.

FIG. 2 is a partially schematic view of an engagement between a tractorand a trailer in accordance with conventional technology. Typically, thetrailer 11 includes an engagement pin 22 (also referred to as a“kingpin”), and the tractor 12 includes a corresponding horse-shoeshaped coupling device 24 (also referred to as a “fifth wheel”). Inaddition to disengaging/engaging the mechanical connections between thekingpin 22 and the fifth wheel 24, the driver also plugs the cable 13and air hoses into a header on the trailer 11. The kingpin/fifth wheelconnections and the plugs on the cables are standardized in the truckingindustry to enable seamless trailer exchanges.

However, the standardized plugs and cables necessitate standardizedoperation of the electrical controls and standardized data exchangesbetween the tractor and the trailer. As a result, any variation from thestandardized functions or data exchanges through the cables requiresspecial parts that may be expensive and difficult to install.Accordingly, there remains a need for cost- and space-effectiveelectrical connections between the tractor and the trailer that addressone or more problems of the prior art systems.

SUMMARY

This summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This summary is not intended to identify key features ofthe inventive technology, nor is it intended to be used as an aid indetermining the scope of the claimed subject matter.

Briefly, the inventive technology uses wireless communication betweenthe tractor and the trailer. In some embodiments, the tractor and thetrailer each include a transceiver (TRX) for a short rangecommunication, for example, the wireless communication in the 1 cm-1 mrange. One of the transceivers may be carried on or near the kingpin ofthe trailer, and the other transceiver may be carried on or near thefifth wheel of the tractor. When the kingpin and the fifth wheel engage,the two transceivers are positioned within a prescribed range toestablish wireless communication. In at least some embodiments, arelatively close proximity between the two transceivers eliminates, orat least reduces, the incidence of hacking of the communication betweentransceivers, or accidental pairings between transceivers.

Some examples of data and/or instructions exchanged between thetransceivers are: unique identifier of the trailer, trailer data such asaxle weight and wheel speed, commands for the backup camera of thetrailer, control commands to the trailer such as lighting, image dataacquired by the backup camera, instructions for opening/closing of thefins of the trailer (also referred to as the “whale tail”), etc.

One advantage of the exchange of data/instructions between wirelesstransceivers is a relatively easy customization compared todata/instructions carried through the cables that connect the tractorwith the trailer. For example, customization may only require a softwareupdate.

In some embodiments, once the proximity-based pairing is established, asecure communication (e.g., encrypted communication) betweentransceivers can be maintained even after the tractor disengages fromthe trailer, therefore no longer satisfying the proximity requirement.In some embodiments, the paired transceivers may allow data access froman outside transceiver, for example from the transceiver carried by anoutside operator, or housed outside of the tractor/trailer combination.

In some embodiments, a system for wireless communication between atractor and a trailer includes a first transceiver (TRX) attached to thetractor, and a second TRX attached to the trailer. An engagement betweenthe tractor and the trailer brings the first TRX within an operationaldistance to the second TRX. In one aspect, the first TRX is attached toa fifth wheel of the tractor, and the second TRX is attached to akingpin of the trailer.

In another aspect, the system also includes a first TRX holderconfigured to carry the first TRX. The first TRX holder includes a firstlocking feature. The system also includes a second TRX holder configuredto carry the second TRX. The second TRX holder includes a second lockingfeature. The first locking feature and the second locking feature engagewhen the tractor engages with the trailer. In one aspect, in an engagedposition of the tractor and the trailer, a distance between the firstTRX and the second TRX is less than 1 m.

In one aspect, the first TRX and the second TRX communicate at anear-field radio frequency band of 13.56 MHz. In one aspect, the systemof claim 1 also includes a third TRX communicatively coupled to at leastone of the first TRX or the second TRX. In another aspect, the third TRXis carried by an operator. In another aspect, the third TRX is housed ina base of a loading depot.

In one aspect, at least one weight sensor senses a load on an axle ofthe trailer, where the weight sensor is in a wireless communication withthe second TRX. In one aspect, the system also includes a backup cameraattached to the trailer, where the backup camera is in a wirelesscommunication with the second TRX.

In one embodiment, a method for wireless communication between a tractorand a trailer includes engaging the tractor with the trailer, where thetractor carries the first transceiver (TRX) and the trailer carries thesecond TRX. The method also includes, bringing the first TRX within anoperational distance from the second TRX by engaging the tractor withthe trailer. The method also includes establishing a wirelesscommunication between the first TRX and the second TRX.

In one aspect, the wireless communication is a secure wirelesscommunication. In one aspect, the method also includes disengaging thetractor from the trailer, and maintaining the secure wirelesscommunication between the first TRX and the second TRX after disengagingthe tractor from the trailer.

In one aspect, the wireless communication between the first TRX and thesecond TRX is established after engaging the tractor with the trailer iscompleted. In one aspect, the method also includes wirelessly exchangingdata between the first TRX and the second TRX. In one aspect, the datainclude instructions to extend fins on the trailer. In another aspect,the data include axle weight obtained by a weight sensor. In one aspect,the data include images obtained by a backup camera carried by thetrailer. In another aspect, the data include a unique identifier of thetrailer.

In one aspect, the method also includes measuring a distance from atrailer to another object by a proximity sensor carried by the trailer,and wirelessly transmitting the distance from the second TRX to thefirst TRX. In another aspect, the method also includes, afterestablishing the wireless communication between the first TRX and thesecond TRX, establishing a wireless communication between a third TRXand at least one of the first TRX and the second TRX, where the thirdTRX is external to the tractor and the trailer. In one aspect, the thirdTRX is carried by a base in a loading depot.

DESCRIPTION OF THE DRAWINGS

The foregoing aspects and many of the attendant advantages of thisinventive technology will become more readily appreciated as the samebecome better understood by reference to the following detaileddescription, when taken in conjunction with the accompanying drawings,wherein:

FIG. 1 is a side plan view of a tractor and a trailer in accordance witha conventional technology;

FIG. 2 is a partially schematic view of an engagement between a tractorand a trailer in accordance with conventional technology;

FIG. 3 is a partially schematic view of a wireless data exchange inaccordance with an embodiment of the present technology;

FIG. 4 is a partially schematic view of an engagement betweentransceivers in accordance with an embodiment of the present technology;

FIG. 5 is a schematic view of communication between transceivers inaccordance with an embodiment of the present technology;

FIG. 6 is a partially schematic view of sensor operation in accordancewith an embodiment of the present technology; and

FIGS. 7 and 8 are side plan views of transceiver pairings in accordancewith a conventional technology.

DETAILED DESCRIPTION

The following disclosure describes various embodiments of systems andassociated methods for near field connection for secure tractor trailercommunication. A person skilled in the art will also understand that thetechnology may have additional embodiments, and that the technology maybe practiced without several of the details of the embodiments describedbelow with reference to FIGS. 3-8.

Although exemplary embodiments of the present disclosure are describedwith reference to the tractors having a fifth wheel connection for thetrailers (e.g., class 8 trucks), it will be appreciated that aspects ofthe present disclosure have wider application, and therefore, may besuitable for use with many other types of connections between the trucksand trailers. Some examples of such connections are a pick-up truck anda camper, a box truck pulling a trailer, etc.

FIG. 3 is a partially schematic view of wireless data exchange 38 inaccordance with an embodiment of the present technology. In someembodiments, the fifth wheel (or other engagement mechanism) 24 of thetractor carries a receiver (RX), a transmitter (TX) or a transceiver(TRX) 34 (hereinafter collectively referred to as a TRX). The kingpin 22carries a corresponding TX, RX or TRX 32. In some embodiments, TRX-es 32and 34 can only communicate within a limited distance. For example, theInternational Organization for Standardization and the InternationalElectrotechnical Commission (ISO/IEC) 18000-3 provides specificationsfor TRX-es that can typically couple within 1 m distance, at a frequencyof 13.56 MHz±7 kHz. In other embodiments, TRX-es can couple within 4 cmdistance or within 1 cm distance. Other non-exclusive examples of usefulwireless communication standards include Bluetooth Low Energy (LE)specified in “Bluetooth Core Specification” versions 4.0 and 5.0. Ingeneral, the Bluetooth LE has a maximum range of about 100 m, but can befiltered to operate at shorter distances. Collectively, radiocommunication that is limited to about 1 m operational distance issometimes referred to as near field communication or NFC.

In some embodiments, when the fifth wheel 24 engages with the kingpin 22of the trailer, their respective TRX-es 34 and 32 become sufficientlyproximate to establish wireless communication. The process ofestablishing wireless communication is sometimes referred to as“pairing.” The maximum allowable distance between the TRX-es forwireless communication is referred to as operational distance. Oncepaired, TRX-es 34 and/or 32 may also communicate with a controller orcomputer 36. For example, the tractor may include the computer 36 forcommunicating with the TRX 34 either wired or wirelessly.

Since the distance required for establishing wireless communication isrelatively short, for example, less than 1 m, the placement of TRX-es 34and 32 may also eliminate accidental pairing with TRX-es on othertractors or trailers. Furthermore, hacking of the wireless connectionbetween TRXes becomes more difficult.

Under some scenarios, for example when the coupling distance betweenTRX-es is within the cm-range, the TRX-es may move outside of theiroperational distance relatively easily as the tractor/trailercombination enters a curve in the road, thus causing possibleintermittency in the operation of the TRX-es. Therefore, in someembodiments of the inventive technology, the TRX-es should be heldwithin coupling distance even when the tractor/trailer combinationenters a curve, downhill/uphill road, in presence of vibrations, etc.,as described in more detail below with respect to FIG. 4.

In some embodiments, the fifth wheel 24 carries a TRX holder 44 and thekingpin 22 carries a mating TRX holder 42. In operation, a lockingfeature 43 of the TRX holder 42 engages with a locking feature 45 of theTRX holder 44, therefore aligning the TRX 32 of the kingpin 22 and theTRX 34 of the fifth wheel 24 within their operational distance (e.g., 1cm, 4 cm, etc.). As a result, TRX-es 32 and 34 can establish andmaintain wireless communication.

In some embodiments, one or both TRX holders 42 and 44 may be rotatableabout their axes (e.g., in a direction R), while preserving their mutualorientation because of locking features 43 and 45. Therefore, in atleast some embodiments, even when the tractor/trailer combination turns,TRX-es 32 and 34 remain within their operational distance (e.g.,distance d) to maintain wireless communication.

The TRX holders 42 and 44 illustrate sample devices for pairing TRX-esand maintaining their distance. However, other TRX holders are alsopossible, for example, conically or cylindrically shaped holders,magnetic holders, etc. Furthermore, in some embodiments, TRX holders maybe mounted aside from the kingpin/fifth wheel surfaces. For example, TRXholder 42 may be mounted on the surface of the trailer 11 that faces thefifth wheel 24 of the tractor 12.

FIG. 5 is a schematic view of communication between TRX-es in accordancewith an embodiment of the present technology. In some embodiments, TRX32 of the tractor has a dedicated power supply 33 (e.g., a battery). Inmany near field communication applications, the power supply 33 may lastseveral years between replacements because the TRX sinks electricalcurrent in the μA-range. In other embodiments, TRX 32 may be poweredfrom a battery of the tractor, directly or through voltage converters.The trailer's TRX 34 may also be powered through a dedicated powersupply 35 or through another battery carried by the trailer.

FIG. 6 is a partially schematic view of sensor operation in accordancewith an embodiment of the present technology. In some embodiments, thetrailer 11 is equipped with a proximity sensor or camera 52, weightsensors 54, and/or other sensors. In some embodiments, the tractor 12can also carry sensors. In operation, the camera 52 may transfer imagesof the area behind the trailer through the TRX-es to a display in thecabin or to an image processing device, for example, the controller 36or other computing device.

In the illustrated embodiment, TRX-es 32 and 34 are located away fromthe fifth wheel/kingpin. However, distance between TRX-es 32 and 34still allows for pairing and maintaining the communication between theTRX-es, while minimizing hacking and accidental pairings.

In some embodiments, the weight sensors 54 can measure axle loading ofthe trailer in real time, without the trailer having to drive over theweight balance. For example, axle loading may be measured as the traileris being loaded with cargo, while the distribution and/or amount ofcargo may be adjusted to conform to the regulations for axle loading.

In some embodiments, the trailers 11 are equipped with fins 56 thatreduce drag of at high speeds. The fins 56 may be extendable bytransmitting a signal from the tractor 12 through the TRX-es to anactuator of the fins 56.

FIGS. 7 and 8 are side plan views of transceiver pairings in accordancewith a conventional technology. FIG. 7 illustrates TRX-es 32 and 34 inwireless communication with another TRX 62. In some embodiments, TRX 62may be a mobile TRX that is carried by an operator (not shown) tocollect data from the tractor/trailer combination (e.g., data about axleloading) and/or to issue instructions for the tractor/trailercombination (e.g., instructions to turn on the proximity sensor).

FIG. 8 illustrates TRX-es 32 and 34 in wireless communication withanother TRX 72 that may be housed in a base 73. In some embodiments, TRX72 collects data or sends instructions to TRX-es 32 and 34, as describedwith respect to the additional TRX 62 shown in FIG. 7.

TRX-es 32 and 34 may establish encrypted communication when they arepaired. Thereafter, communication between the TRX-es remains secureagainst hackers even when TRX-es 32 and 34 are no longer proximateenough for pairing to take place. For example, after the tractor 12 andthe trailer 11 are not engaged anymore, the TRX-es may continue tocommunicate through encrypted wireless communication within the distancelimits for a particular wireless communication. In some embodiments,wireless communication between TRX-es 32 and 34 ends when the tractor 12engages with another trailer 11.

Many embodiments of the technology described above may take the form ofcomputer- or controller-executable instructions, including routinesexecuted by a programmable computer or controller. Those skilled in therelevant art will appreciate that the technology can be practiced oncomputer/controller systems other than those shown and described above.The technology can be embodied in a special-purpose computer,application specific integrated circuit (ASIC), controller or dataprocessor that is specifically programmed, configured or constructed toperform one or more of the computer-executable instructions describedabove. Of course, any logic or algorithm described herein can beimplemented in software or hardware, or a combination of software andhardware.

From the foregoing, it will be appreciated that specific embodiments ofthe technology have been described herein for purposes of illustration,but that various modifications may be made without deviating from thedisclosure. Moreover, while various advantages and features associatedwith certain embodiments have been described above in the context ofthose embodiments, other embodiments may also exhibit such advantagesand/or features, and not all embodiments need necessarily exhibit suchadvantages and/or features to fall within the scope of the technology.Accordingly, the disclosure can encompass other embodiments notexpressly shown or described herein.

1. A system for wireless communication between a tractor and a trailer,comprising: a first transceiver (TRX) attached to the tractor; and asecond TRX attached to the trailer, wherein an engagement between thetractor and the trailer brings the first TRX within an operationaldistance of less than about one meter from the second TRX.
 2. The systemof claim 1, wherein the first TRX is attached to a fifth wheel of thetractor, and the second TRX is attached to a kingpin of the trailer. 3.The system of claim 2, further comprising: a first TRX holder configuredto carry the first TRX, the first TRX holder comprising a first lockingfeature; and a second TRX holder configured to carry the second TRX, thesecond TRX holder comprising a second locking feature, wherein the firstlocking feature and the second locking feature are configured to engagewhen the tractor engages with the trailer.
 4. The system of claim 1,wherein, in an engaged position of the tractor and the trailer, adistance between the first TRX and the second TRX is less than 1 m. 5.The system of claim 1, wherein the first TRX and the second TRXcommunicate at a near-field radio frequency band of 13.56 MHz.
 6. Thesystem of claim 1, further comprising a third TRX communicativelycoupled to at least one of the first TRX or the second TRX.
 7. Thesystem of claim 6, wherein the third TRX is carried by an operator. 8.The system of claim 6, wherein the third TRX is housed in a base of aloading depot.
 9. The system of claim 1, further comprising at least oneweight sensor configured to sense a load on an axle of the trailer,wherein the weight sensor is in a wireless communication with the secondTRX.
 10. The system of claim 1, further comprising a backup cameraattached to the trailer, wherein the backup camera is in a wirelesscommunication with the second TRX.
 11. A method for wirelesscommunication between a tractor and a trailer, comprising: engaging thetractor with the trailer, wherein the tractor carries the firsttransceiver (TRX) and the trailer carries the second TRX; by engagingthe tractor with the trailer, bringing the first TRX within anoperational distance from the second TRX, the operational distance beingless than about one meter; and establishing a wireless communicationbetween the first TRX and the second TRX.
 12. The method of claim 11,wherein the wireless communication is a secure wireless communication.13. The method of claim 12, further comprising: disengaging the tractorfrom the trailer; and maintaining the secure wireless communicationbetween the first TRX and the second TRX after disengaging the tractorfrom the trailer.
 14. The method of claim 11, wherein the wirelesscommunication between the first TRX and the second TRX is establishedafter engaging the tractor with the trailer is completed.
 15. The methodof claim 11, further comprising wirelessly exchanging data between thefirst TRX and the second TRX.
 16. The method of claim 15, wherein thedata comprise instructions to extend fins on the trailer.
 17. The methodof claim 15, wherein the data comprise axle weight obtained by a weightsensor.
 18. The method of claim 15, wherein the data comprise imagesobtained by a backup camera carried by the trailer.
 19. The method ofclaim 15, wherein the data comprise a unique identifier of the trailer.20. The method of claim 15, further comprising: measuring a distancefrom a trailer to another object by a proximity sensor carried by thetrailer; and wirelessly transmitting the distance from the second TRX tothe first TRX.
 21. The method of claim 11, further comprising: afterestablishing the wireless communication between the first TRX and thesecond TRX, establishing a wireless communication between a third TRXand at least one of the first TRX and the second TRX, wherein the thirdTRX is external to the tractor and the trailer.
 22. The method of claim21, wherein the third TRX is carried by a base in a loading depot.